Home / 387,343.13-581,036.56-138,025.13

Finding the Fourth Proportional to 387,343.13, 581,036.56 and 138,025.13

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Solution

The fourth proportional to 387,343.13, 581,036.56 and 138,025.13 is: 207,045.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,343.13 : 581,036.56 = 138,025.13 : x
  2. Step 2: Convert to fraction form
    387,343.13/581,036.56 = 138,025.13/x
  3. Step 3: Cross multiply
    387,343.13x = 581,036.56 × 138,025.13
  4. Step 4: Simplify right side
    387,343.13x = 80,197,643,478.51
  5. Step 5: Solve for x
    x = 80,197,643,478.51/387,343.13
  6. Step 6: Final answer
    x = 207,045.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.