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Finding the Fourth Proportional to 291,237.61, 436,856.04 and 91,575.46

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Solution

The fourth proportional to 291,237.61, 436,856.04 and 91,575.46 is: 137,363.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,237.61 : 436,856.04 = 91,575.46 : x
  2. Step 2: Convert to fraction form
    291,237.61/436,856.04 = 91,575.46/x
  3. Step 3: Cross multiply
    291,237.61x = 436,856.04 × 91,575.46
  4. Step 4: Simplify right side
    291,237.61x = 40,005,292,816.78
  5. Step 5: Solve for x
    x = 40,005,292,816.78/291,237.61
  6. Step 6: Final answer
    x = 137,363.07

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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.