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Finding the Fourth Proportional to 389,374.88, 583,838.76 and 152,440.16

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Solution

The fourth proportional to 389,374.88, 583,838.76 and 152,440.16 is: 228,572.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,374.88 : 583,838.76 = 152,440.16 : x
  2. Step 2: Convert to fraction form
    389,374.88/583,838.76 = 152,440.16/x
  3. Step 3: Cross multiply
    389,374.88x = 583,838.76 × 152,440.16
  4. Step 4: Simplify right side
    389,374.88x = 89,000,473,988.60
  5. Step 5: Solve for x
    x = 89,000,473,988.60/389,374.88
  6. Step 6: Final answer
    x = 228,572.72

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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.