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Finding the Fourth Proportional to 554,510.72, 831,665.88 and 155,052.80

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Solution

The fourth proportional to 554,510.72, 831,665.88 and 155,052.80 is: 232,551.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,510.72 : 831,665.88 = 155,052.80 : x
  2. Step 2: Convert to fraction form
    554,510.72/831,665.88 = 155,052.80/x
  3. Step 3: Cross multiply
    554,510.72x = 831,665.88 × 155,052.80
  4. Step 4: Simplify right side
    554,510.72x = 128,952,123,358.46
  5. Step 5: Solve for x
    x = 128,952,123,358.46/554,510.72
  6. Step 6: Final answer
    x = 232,551.18

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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.