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Finding the Fourth Proportional to 291,706.60, 402,555.36 and 157,570.60

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Solution

The fourth proportional to 291,706.60, 402,555.36 and 157,570.60 is: 217,447.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,706.60 : 402,555.36 = 157,570.60 : x
  2. Step 2: Convert to fraction form
    291,706.60/402,555.36 = 157,570.60/x
  3. Step 3: Cross multiply
    291,706.60x = 402,555.36 × 157,570.60
  4. Step 4: Simplify right side
    291,706.60x = 63,430,889,608.42
  5. Step 5: Solve for x
    x = 63,430,889,608.42/291,706.60
  6. Step 6: Final answer
    x = 217,447.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.