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Finding the Fourth Proportional to 289,697.00, 434,462.47 and 87,312.69

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Solution

The fourth proportional to 289,697.00, 434,462.47 and 87,312.69 is: 130,944.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,697.00 : 434,462.47 = 87,312.69 : x
  2. Step 2: Convert to fraction form
    289,697.00/434,462.47 = 87,312.69/x
  3. Step 3: Cross multiply
    289,697.00x = 434,462.47 × 87,312.69
  4. Step 4: Simplify right side
    289,697.00x = 37,934,086,741.46
  5. Step 5: Solve for x
    x = 37,934,086,741.46/289,697.00
  6. Step 6: Final answer
    x = 130,944.01

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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.