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Finding the Fourth Proportional to 528,439.68, 792,730.08 and 154,457.28

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Solution

The fourth proportional to 528,439.68, 792,730.08 and 154,457.28 is: 231,706.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,439.68 : 792,730.08 = 154,457.28 : x
  2. Step 2: Convert to fraction form
    528,439.68/792,730.08 = 154,457.28/x
  3. Step 3: Cross multiply
    528,439.68x = 792,730.08 × 154,457.28
  4. Step 4: Simplify right side
    528,439.68x = 122,442,931,930.98
  5. Step 5: Solve for x
    x = 122,442,931,930.98/528,439.68
  6. Step 6: Final answer
    x = 231,706.54

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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.