Home / 426,547.40-639,513.90-239,616.20

Finding the Fourth Proportional to 426,547.40, 639,513.90 and 239,616.20

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Solution

The fourth proportional to 426,547.40, 639,513.90 and 239,616.20 is: 359,251.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,547.40 : 639,513.90 = 239,616.20 : x
  2. Step 2: Convert to fraction form
    426,547.40/639,513.90 = 239,616.20/x
  3. Step 3: Cross multiply
    426,547.40x = 639,513.90 × 239,616.20
  4. Step 4: Simplify right side
    426,547.40x = 153,237,890,565.18
  5. Step 5: Solve for x
    x = 153,237,890,565.18/426,547.40
  6. Step 6: Final answer
    x = 359,251.73

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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.