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Finding the Fourth Proportional to 370,923.70, 556,385.55 and 291,207.55

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Solution

The fourth proportional to 370,923.70, 556,385.55 and 291,207.55 is: 436,811.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,923.70 : 556,385.55 = 291,207.55 : x
  2. Step 2: Convert to fraction form
    370,923.70/556,385.55 = 291,207.55/x
  3. Step 3: Cross multiply
    370,923.70x = 556,385.55 × 291,207.55
  4. Step 4: Simplify right side
    370,923.70x = 162,023,672,870.90
  5. Step 5: Solve for x
    x = 162,023,672,870.90/370,923.70
  6. Step 6: Final answer
    x = 436,811.33

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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.