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Finding the Fourth Proportional to 253,359.20, 380,038.80 and 103,501.10

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Solution

The fourth proportional to 253,359.20, 380,038.80 and 103,501.10 is: 155,251.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,359.20 : 380,038.80 = 103,501.10 : x
  2. Step 2: Convert to fraction form
    253,359.20/380,038.80 = 103,501.10/x
  3. Step 3: Cross multiply
    253,359.20x = 380,038.80 × 103,501.10
  4. Step 4: Simplify right side
    253,359.20x = 39,334,433,842.68
  5. Step 5: Solve for x
    x = 39,334,433,842.68/253,359.20
  6. Step 6: Final answer
    x = 155,251.65

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1.5x scale

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.