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Finding the Fourth Proportional to 291,665.80, 437,595.90 and 260,309.80

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Solution

The fourth proportional to 291,665.80, 437,595.90 and 260,309.80 is: 390,551.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,665.80 : 437,595.90 = 260,309.80 : x
  2. Step 2: Convert to fraction form
    291,665.80/437,595.90 = 260,309.80/x
  3. Step 3: Cross multiply
    291,665.80x = 437,595.90 × 260,309.80
  4. Step 4: Simplify right side
    291,665.80x = 113,910,501,209.82
  5. Step 5: Solve for x
    x = 113,910,501,209.82/291,665.80
  6. Step 6: Final answer
    x = 390,551.45

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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.