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Finding the Fourth Proportional to 266,688.53, 367,715.70 and 215,543.10

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Solution

The fourth proportional to 266,688.53, 367,715.70 and 215,543.10 is: 297,195.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,688.53 : 367,715.70 = 215,543.10 : x
  2. Step 2: Convert to fraction form
    266,688.53/367,715.70 = 215,543.10/x
  3. Step 3: Cross multiply
    266,688.53x = 367,715.70 × 215,543.10
  4. Step 4: Simplify right side
    266,688.53x = 79,258,581,896.67
  5. Step 5: Solve for x
    x = 79,258,581,896.67/266,688.53
  6. Step 6: Final answer
    x = 297,195.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.