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Finding the Fourth Proportional to 317,434.64, 438,059.56 and 181,471.60

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Solution

The fourth proportional to 317,434.64, 438,059.56 and 181,471.60 is: 250,430.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,434.64 : 438,059.56 = 181,471.60 : x
  2. Step 2: Convert to fraction form
    317,434.64/438,059.56 = 181,471.60/x
  3. Step 3: Cross multiply
    317,434.64x = 438,059.56 × 181,471.60
  4. Step 4: Simplify right side
    317,434.64x = 79,495,369,248.50
  5. Step 5: Solve for x
    x = 79,495,369,248.50/317,434.64
  6. Step 6: Final answer
    x = 250,430.67

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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.