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Finding the Fourth Proportional to 485,869.47, 728,804.21 and 249,061.11

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Solution

The fourth proportional to 485,869.47, 728,804.21 and 249,061.11 is: 373,591.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,869.47 : 728,804.21 = 249,061.11 : x
  2. Step 2: Convert to fraction form
    485,869.47/728,804.21 = 249,061.11/x
  3. Step 3: Cross multiply
    485,869.47x = 728,804.21 × 249,061.11
  4. Step 4: Simplify right side
    485,869.47x = 181,516,784,269.97
  5. Step 5: Solve for x
    x = 181,516,784,269.97/485,869.47
  6. Step 6: Final answer
    x = 373,591.67

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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.