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Finding the Fourth Proportional to 253,287.34, 379,931.45 and 103,527.50

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Solution

The fourth proportional to 253,287.34, 379,931.45 and 103,527.50 is: 155,291.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,287.34 : 379,931.45 = 103,527.50 : x
  2. Step 2: Convert to fraction form
    253,287.34/379,931.45 = 103,527.50/x
  3. Step 3: Cross multiply
    253,287.34x = 379,931.45 × 103,527.50
  4. Step 4: Simplify right side
    253,287.34x = 39,333,350,772.58
  5. Step 5: Solve for x
    x = 39,333,350,772.58/253,287.34
  6. Step 6: Final answer
    x = 155,291.42

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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.