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Finding the Fourth Proportional to 438,909.32, 605,452.35 and 357,325.33

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Solution

The fourth proportional to 438,909.32, 605,452.35 and 357,325.33 is: 492,911.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,909.32 : 605,452.35 = 357,325.33 : x
  2. Step 2: Convert to fraction form
    438,909.32/605,452.35 = 357,325.33/x
  3. Step 3: Cross multiply
    438,909.32x = 605,452.35 × 357,325.33
  4. Step 4: Simplify right side
    438,909.32x = 216,343,460,763.03
  5. Step 5: Solve for x
    x = 216,343,460,763.03/438,909.32
  6. Step 6: Final answer
    x = 492,911.52

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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.