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Finding the Fourth Proportional to 381,875.40, 572,597.10 and 145,225.80

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Solution

The fourth proportional to 381,875.40, 572,597.10 and 145,225.80 is: 217,756.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,875.40 : 572,597.10 = 145,225.80 : x
  2. Step 2: Convert to fraction form
    381,875.40/572,597.10 = 145,225.80/x
  3. Step 3: Cross multiply
    381,875.40x = 572,597.10 × 145,225.80
  4. Step 4: Simplify right side
    381,875.40x = 83,155,871,925.18
  5. Step 5: Solve for x
    x = 83,155,871,925.18/381,875.40
  6. Step 6: Final answer
    x = 217,756.56

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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.