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Finding the Fourth Proportional to 291,392.66, 437,148.10 and 91,666.59

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Solution

The fourth proportional to 291,392.66, 437,148.10 and 91,666.59 is: 137,518.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,392.66 : 437,148.10 = 91,666.59 : x
  2. Step 2: Convert to fraction form
    291,392.66/437,148.10 = 91,666.59/x
  3. Step 3: Cross multiply
    291,392.66x = 437,148.10 × 91,666.59
  4. Step 4: Simplify right side
    291,392.66x = 40,071,875,881.15
  5. Step 5: Solve for x
    x = 40,071,875,881.15/291,392.66
  6. Step 6: Final answer
    x = 137,518.48

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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.