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Finding the Fourth Proportional to 317,484.42, 438,155.40 and 174,268.74

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Solution

The fourth proportional to 317,484.42, 438,155.40 and 174,268.74 is: 240,505.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,484.42 : 438,155.40 = 174,268.74 : x
  2. Step 2: Convert to fraction form
    317,484.42/438,155.40 = 174,268.74/x
  3. Step 3: Cross multiply
    317,484.42x = 438,155.40 × 174,268.74
  4. Step 4: Simplify right side
    317,484.42x = 76,356,789,482.20
  5. Step 5: Solve for x
    x = 76,356,789,482.20/317,484.42
  6. Step 6: Final answer
    x = 240,505.63

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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.