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Finding the Fourth Proportional to 249,155.76, 373,511.40 and 91,347.40

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Solution

The fourth proportional to 249,155.76, 373,511.40 and 91,347.40 is: 136,939.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,155.76 : 373,511.40 = 91,347.40 : x
  2. Step 2: Convert to fraction form
    249,155.76/373,511.40 = 91,347.40/x
  3. Step 3: Cross multiply
    249,155.76x = 373,511.40 × 91,347.40
  4. Step 4: Simplify right side
    249,155.76x = 34,119,295,260.36
  5. Step 5: Solve for x
    x = 34,119,295,260.36/249,155.76
  6. Step 6: Final answer
    x = 136,939.62

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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.