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Finding the Fourth Proportional to 291,368.88, 402,064.56 and 178,169.76

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Solution

The fourth proportional to 291,368.88, 402,064.56 and 178,169.76 is: 245,859.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,368.88 : 402,064.56 = 178,169.76 : x
  2. Step 2: Convert to fraction form
    291,368.88/402,064.56 = 178,169.76/x
  3. Step 3: Cross multiply
    291,368.88x = 402,064.56 × 178,169.76
  4. Step 4: Simplify right side
    291,368.88x = 71,635,746,159.71
  5. Step 5: Solve for x
    x = 71,635,746,159.71/291,368.88
  6. Step 6: Final answer
    x = 245,859.29

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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.