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Finding the Fourth Proportional to 293,165.40, 439,748.10 and 291,415.80

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Solution

The fourth proportional to 293,165.40, 439,748.10 and 291,415.80 is: 437,123.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    293,165.40 : 439,748.10 = 291,415.80 : x
  2. Step 2: Convert to fraction form
    293,165.40/439,748.10 = 291,415.80/x
  3. Step 3: Cross multiply
    293,165.40x = 439,748.10 × 291,415.80
  4. Step 4: Simplify right side
    293,165.40x = 128,149,544,359.98
  5. Step 5: Solve for x
    x = 128,149,544,359.98/293,165.40
  6. Step 6: Final answer
    x = 437,123.70

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1.5x scale

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.