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Finding the Fourth Proportional to 540,131.39, 745,389.14 and 298,419.53

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Solution

The fourth proportional to 540,131.39, 745,389.14 and 298,419.53 is: 411,823.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,131.39 : 745,389.14 = 298,419.53 : x
  2. Step 2: Convert to fraction form
    540,131.39/745,389.14 = 298,419.53/x
  3. Step 3: Cross multiply
    540,131.39x = 745,389.14 × 298,419.53
  4. Step 4: Simplify right side
    540,131.39x = 222,438,671,606.86
  5. Step 5: Solve for x
    x = 222,438,671,606.86/540,131.39
  6. Step 6: Final answer
    x = 411,823.26

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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.