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Finding the Fourth Proportional to 287,338.32, 429,807.12 and 201,943.20

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Solution

The fourth proportional to 287,338.32, 429,807.12 and 201,943.20 is: 302,071.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,338.32 : 429,807.12 = 201,943.20 : x
  2. Step 2: Convert to fraction form
    287,338.32/429,807.12 = 201,943.20/x
  3. Step 3: Cross multiply
    287,338.32x = 429,807.12 × 201,943.20
  4. Step 4: Simplify right side
    287,338.32x = 86,796,625,195.58
  5. Step 5: Solve for x
    x = 86,796,625,195.58/287,338.32
  6. Step 6: Final answer
    x = 302,071.18

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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.