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Finding the Fourth Proportional to 312,312.30, 468,398.28 and 143,670.66

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Solution

The fourth proportional to 312,312.30, 468,398.28 and 143,670.66 is: 215,473.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,312.30 : 468,398.28 = 143,670.66 : x
  2. Step 2: Convert to fraction form
    312,312.30/468,398.28 = 143,670.66/x
  3. Step 3: Cross multiply
    312,312.30x = 468,398.28 × 143,670.66
  4. Step 4: Simplify right side
    312,312.30x = 67,295,090,030.46
  5. Step 5: Solve for x
    x = 67,295,090,030.46/312,312.30
  6. Step 6: Final answer
    x = 215,473.71

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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.