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Finding the Fourth Proportional to 545,688.36, 753,057.95 and 316,262.61

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Solution

The fourth proportional to 545,688.36, 753,057.95 and 316,262.61 is: 436,447.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,688.36 : 753,057.95 = 316,262.61 : x
  2. Step 2: Convert to fraction form
    545,688.36/753,057.95 = 316,262.61/x
  3. Step 3: Cross multiply
    545,688.36x = 753,057.95 × 316,262.61
  4. Step 4: Simplify right side
    545,688.36x = 238,164,071,166.94
  5. Step 5: Solve for x
    x = 238,164,071,166.94/545,688.36
  6. Step 6: Final answer
    x = 436,447.04

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.