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Finding the Fourth Proportional to 355,281.10, 532,921.65 and 307,588.30

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Solution

The fourth proportional to 355,281.10, 532,921.65 and 307,588.30 is: 461,382.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,281.10 : 532,921.65 = 307,588.30 : x
  2. Step 2: Convert to fraction form
    355,281.10/532,921.65 = 307,588.30/x
  3. Step 3: Cross multiply
    355,281.10x = 532,921.65 × 307,588.30
  4. Step 4: Simplify right side
    355,281.10x = 163,920,464,356.70
  5. Step 5: Solve for x
    x = 163,920,464,356.70/355,281.10
  6. Step 6: Final answer
    x = 461,382.45

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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.