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Finding the Fourth Proportional to 291,372.07, 402,111.95 and 176,661.70

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Solution

The fourth proportional to 291,372.07, 402,111.95 and 176,661.70 is: 243,804.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,372.07 : 402,111.95 = 176,661.70 : x
  2. Step 2: Convert to fraction form
    291,372.07/402,111.95 = 176,661.70/x
  3. Step 3: Cross multiply
    291,372.07x = 402,111.95 × 176,661.70
  4. Step 4: Simplify right side
    291,372.07x = 71,037,780,677.32
  5. Step 5: Solve for x
    x = 71,037,780,677.32/291,372.07
  6. Step 6: Final answer
    x = 243,804.36

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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.