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Finding the Fourth Proportional to 291,695.45, 437,543.07 and 70,079.45

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Solution

The fourth proportional to 291,695.45, 437,543.07 and 70,079.45 is: 105,119.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,695.45 : 437,543.07 = 70,079.45 : x
  2. Step 2: Convert to fraction form
    291,695.45/437,543.07 = 70,079.45/x
  3. Step 3: Cross multiply
    291,695.45x = 437,543.07 × 70,079.45
  4. Step 4: Simplify right side
    291,695.45x = 30,662,775,246.40
  5. Step 5: Solve for x
    x = 30,662,775,246.40/291,695.45
  6. Step 6: Final answer
    x = 105,119.14

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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.