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Finding the Fourth Proportional to 342,061.60, 513,148.56 and 105,404.32

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Solution

The fourth proportional to 342,061.60, 513,148.56 and 105,404.32 is: 158,123.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,061.60 : 513,148.56 = 105,404.32 : x
  2. Step 2: Convert to fraction form
    342,061.60/513,148.56 = 105,404.32/x
  3. Step 3: Cross multiply
    342,061.60x = 513,148.56 × 105,404.32
  4. Step 4: Simplify right side
    342,061.60x = 54,088,075,025.78
  5. Step 5: Solve for x
    x = 54,088,075,025.78/342,061.60
  6. Step 6: Final answer
    x = 158,123.79

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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.