Home / 331,547.20-497,385.60-142,007.20

Finding the Fourth Proportional to 331,547.20, 497,385.60 and 142,007.20

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Solution

The fourth proportional to 331,547.20, 497,385.60 and 142,007.20 is: 213,038.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,547.20 : 497,385.60 = 142,007.20 : x
  2. Step 2: Convert to fraction form
    331,547.20/497,385.60 = 142,007.20/x
  3. Step 3: Cross multiply
    331,547.20x = 497,385.60 × 142,007.20
  4. Step 4: Simplify right side
    331,547.20x = 70,632,336,376.32
  5. Step 5: Solve for x
    x = 70,632,336,376.32/331,547.20
  6. Step 6: Final answer
    x = 213,038.55

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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.