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Finding the Fourth Proportional to 458,920.13, 688,185.52 and 218,756.19

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Solution

The fourth proportional to 458,920.13, 688,185.52 and 218,756.19 is: 328,041.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,920.13 : 688,185.52 = 218,756.19 : x
  2. Step 2: Convert to fraction form
    458,920.13/688,185.52 = 218,756.19/x
  3. Step 3: Cross multiply
    458,920.13x = 688,185.52 × 218,756.19
  4. Step 4: Simplify right side
    458,920.13x = 150,544,841,274.59
  5. Step 5: Solve for x
    x = 150,544,841,274.59/458,920.13
  6. Step 6: Final answer
    x = 328,041.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.