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Finding the Fourth Proportional to 519,487.50, 716,885.76 and 290,048.31

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Solution

The fourth proportional to 519,487.50, 716,885.76 and 290,048.31 is: 400,262.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,487.50 : 716,885.76 = 290,048.31 : x
  2. Step 2: Convert to fraction form
    519,487.50/716,885.76 = 290,048.31/x
  3. Step 3: Cross multiply
    519,487.50x = 716,885.76 × 290,048.31
  4. Step 4: Simplify right side
    519,487.50x = 207,931,503,151.07
  5. Step 5: Solve for x
    x = 207,931,503,151.07/519,487.50
  6. Step 6: Final answer
    x = 400,262.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.