Home / 281,604,477.40-388,607,242.62-156,155,980.12

Finding the Fourth Proportional to 281,604,477.40, 388,607,242.62 and 156,155,980.12

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Solution

The fourth proportional to 281,604,477.40, 388,607,242.62 and 156,155,980.12 is: 215,491,406.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,604,477.40 : 388,607,242.62 = 156,155,980.12 : x
  2. Step 2: Convert to fraction form
    281,604,477.40/388,607,242.62 = 156,155,980.12/x
  3. Step 3: Cross multiply
    281,604,477.40x = 388,607,242.62 × 156,155,980.12
  4. Step 4: Simplify right side
    281,604,477.40x = 60,683,344,853,056,736
  5. Step 5: Solve for x
    x = 60,683,344,853,056,736/281,604,477.40
  6. Step 6: Final answer
    x = 215,491,406.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.