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Finding the Fourth Proportional to 281,280.60, 388,166.58 and 153,955.08

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Solution

The fourth proportional to 281,280.60, 388,166.58 and 153,955.08 is: 212,457.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,280.60 : 388,166.58 = 153,955.08 : x
  2. Step 2: Convert to fraction form
    281,280.60/388,166.58 = 153,955.08/x
  3. Step 3: Cross multiply
    281,280.60x = 388,166.58 × 153,955.08
  4. Step 4: Simplify right side
    281,280.60x = 59,760,216,877.23
  5. Step 5: Solve for x
    x = 59,760,216,877.23/281,280.60
  6. Step 6: Final answer
    x = 212,457.66

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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.