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Finding the Fourth Proportional to 388,898.10, 583,249.95 and 148,959.90

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Solution

The fourth proportional to 388,898.10, 583,249.95 and 148,959.90 is: 223,402.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,898.10 : 583,249.95 = 148,959.90 : x
  2. Step 2: Convert to fraction form
    388,898.10/583,249.95 = 148,959.90/x
  3. Step 3: Cross multiply
    388,898.10x = 583,249.95 × 148,959.90
  4. Step 4: Simplify right side
    388,898.10x = 86,880,854,227.01
  5. Step 5: Solve for x
    x = 86,880,854,227.01/388,898.10
  6. Step 6: Final answer
    x = 223,402.62

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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.