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Finding the Fourth Proportional to 447,616.40, 671,424.60 and 346,139.60

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Solution

The fourth proportional to 447,616.40, 671,424.60 and 346,139.60 is: 519,209.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,616.40 : 671,424.60 = 346,139.60 : x
  2. Step 2: Convert to fraction form
    447,616.40/671,424.60 = 346,139.60/x
  3. Step 3: Cross multiply
    447,616.40x = 671,424.60 × 346,139.60
  4. Step 4: Simplify right side
    447,616.40x = 232,406,642,474.16
  5. Step 5: Solve for x
    x = 232,406,642,474.16/447,616.40
  6. Step 6: Final answer
    x = 519,209.40

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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.