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Finding the Fourth Proportional to 318,805.02, 439,953.81 and 175,565.64

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Solution

The fourth proportional to 318,805.02, 439,953.81 and 175,565.64 is: 242,282.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,805.02 : 439,953.81 = 175,565.64 : x
  2. Step 2: Convert to fraction form
    318,805.02/439,953.81 = 175,565.64/x
  3. Step 3: Cross multiply
    318,805.02x = 439,953.81 × 175,565.64
  4. Step 4: Simplify right side
    318,805.02x = 77,240,772,223.09
  5. Step 5: Solve for x
    x = 77,240,772,223.09/318,805.02
  6. Step 6: Final answer
    x = 242,282.17

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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.