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Finding the Fourth Proportional to 607,981.76, 912,070.64 and 187,257.44

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Solution

The fourth proportional to 607,981.76, 912,070.64 and 187,257.44 is: 280,916.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,981.76 : 912,070.64 = 187,257.44 : x
  2. Step 2: Convert to fraction form
    607,981.76/912,070.64 = 187,257.44/x
  3. Step 3: Cross multiply
    607,981.76x = 912,070.64 × 187,257.44
  4. Step 4: Simplify right side
    607,981.76x = 170,792,013,145.56
  5. Step 5: Solve for x
    x = 170,792,013,145.56/607,981.76
  6. Step 6: Final answer
    x = 280,916.34

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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.