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Finding the Fourth Proportional to 291,798.98, 402,713.55 and 171,041.72

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Solution

The fourth proportional to 291,798.98, 402,713.55 and 171,041.72 is: 236,055.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,798.98 : 402,713.55 = 171,041.72 : x
  2. Step 2: Convert to fraction form
    291,798.98/402,713.55 = 171,041.72/x
  3. Step 3: Cross multiply
    291,798.98x = 402,713.55 × 171,041.72
  4. Step 4: Simplify right side
    291,798.98x = 68,880,817,404.10
  5. Step 5: Solve for x
    x = 68,880,817,404.10/291,798.98
  6. Step 6: Final answer
    x = 236,055.72

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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.