Home / 378,001.08-521,547.18-240,129.72

Finding the Fourth Proportional to 378,001.08, 521,547.18 and 240,129.72

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Solution

The fourth proportional to 378,001.08, 521,547.18 and 240,129.72 is: 331,319.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,001.08 : 521,547.18 = 240,129.72 : x
  2. Step 2: Convert to fraction form
    378,001.08/521,547.18 = 240,129.72/x
  3. Step 3: Cross multiply
    378,001.08x = 521,547.18 × 240,129.72
  4. Step 4: Simplify right side
    378,001.08x = 125,238,978,300.19
  5. Step 5: Solve for x
    x = 125,238,978,300.19/378,001.08
  6. Step 6: Final answer
    x = 331,319.10

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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.