Home / 309,617.04-427,276.40-173,681.20

Finding the Fourth Proportional to 309,617.04, 427,276.40 and 173,681.20

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Solution

The fourth proportional to 309,617.04, 427,276.40 and 173,681.20 is: 239,682.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,617.04 : 427,276.40 = 173,681.20 : x
  2. Step 2: Convert to fraction form
    309,617.04/427,276.40 = 173,681.20/x
  3. Step 3: Cross multiply
    309,617.04x = 427,276.40 × 173,681.20
  4. Step 4: Simplify right side
    309,617.04x = 74,209,877,883.68
  5. Step 5: Solve for x
    x = 74,209,877,883.68/309,617.04
  6. Step 6: Final answer
    x = 239,682.80

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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.