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Finding the Fourth Proportional to 509,265.71, 763,895.58 and 130,185.91

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Solution

The fourth proportional to 509,265.71, 763,895.58 and 130,185.91 is: 195,278.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,265.71 : 763,895.58 = 130,185.91 : x
  2. Step 2: Convert to fraction form
    509,265.71/763,895.58 = 130,185.91/x
  3. Step 3: Cross multiply
    509,265.71x = 763,895.58 × 130,185.91
  4. Step 4: Simplify right side
    509,265.71x = 99,448,441,693.95
  5. Step 5: Solve for x
    x = 99,448,441,693.95/509,265.71
  6. Step 6: Final answer
    x = 195,278.10

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1.5x scale

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.