Home / 387,039.90-534,115.59-217,275.24

Finding the Fourth Proportional to 387,039.90, 534,115.59 and 217,275.24

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Solution

The fourth proportional to 387,039.90, 534,115.59 and 217,275.24 is: 299,840.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,039.90 : 534,115.59 = 217,275.24 : x
  2. Step 2: Convert to fraction form
    387,039.90/534,115.59 = 217,275.24/x
  3. Step 3: Cross multiply
    387,039.90x = 534,115.59 × 217,275.24
  4. Step 4: Simplify right side
    387,039.90x = 116,050,093,004.99
  5. Step 5: Solve for x
    x = 116,050,093,004.99/387,039.90
  6. Step 6: Final answer
    x = 299,840.13

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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.