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Finding the Fourth Proportional to 478,718.12, 718,075.02 and 123,701.96

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Solution

The fourth proportional to 478,718.12, 718,075.02 and 123,701.96 is: 185,552.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,718.12 : 718,075.02 = 123,701.96 : x
  2. Step 2: Convert to fraction form
    478,718.12/718,075.02 = 123,701.96/x
  3. Step 3: Cross multiply
    478,718.12x = 718,075.02 × 123,701.96
  4. Step 4: Simplify right side
    478,718.12x = 88,827,287,401.04
  5. Step 5: Solve for x
    x = 88,827,287,401.04/478,718.12
  6. Step 6: Final answer
    x = 185,552.38

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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.