Home / 390,934.26-539,547.30-247,707.72

Finding the Fourth Proportional to 390,934.26, 539,547.30 and 247,707.72

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Solution

The fourth proportional to 390,934.26, 539,547.30 and 247,707.72 is: 341,873.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,934.26 : 539,547.30 = 247,707.72 : x
  2. Step 2: Convert to fraction form
    390,934.26/539,547.30 = 247,707.72/x
  3. Step 3: Cross multiply
    390,934.26x = 539,547.30 × 247,707.72
  4. Step 4: Simplify right side
    390,934.26x = 133,650,031,515.16
  5. Step 5: Solve for x
    x = 133,650,031,515.16/390,934.26
  6. Step 6: Final answer
    x = 341,873.42

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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.