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Finding the Fourth Proportional to 388,708.16, 583,135.74 and 152,035.88

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Solution

The fourth proportional to 388,708.16, 583,135.74 and 152,035.88 is: 228,082.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,708.16 : 583,135.74 = 152,035.88 : x
  2. Step 2: Convert to fraction form
    388,708.16/583,135.74 = 152,035.88/x
  3. Step 3: Cross multiply
    388,708.16x = 583,135.74 × 152,035.88
  4. Step 4: Simplify right side
    388,708.16x = 88,657,552,474.67
  5. Step 5: Solve for x
    x = 88,657,552,474.67/388,708.16
  6. Step 6: Final answer
    x = 228,082.56

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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.