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Finding the Fourth Proportional to 540,385.68, 745,709.04 and 298,655.76

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Solution

The fourth proportional to 540,385.68, 745,709.04 and 298,655.76 is: 412,132.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,385.68 : 745,709.04 = 298,655.76 : x
  2. Step 2: Convert to fraction form
    540,385.68/745,709.04 = 298,655.76/x
  3. Step 3: Cross multiply
    540,385.68x = 745,709.04 × 298,655.76
  4. Step 4: Simplify right side
    540,385.68x = 222,710,300,080.07
  5. Step 5: Solve for x
    x = 222,710,300,080.07/540,385.68
  6. Step 6: Final answer
    x = 412,132.13

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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.