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Finding the Fourth Proportional to 266,430.52, 399,803.40 and 98,069.08

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Solution

The fourth proportional to 266,430.52, 399,803.40 and 98,069.08 is: 147,161.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,430.52 : 399,803.40 = 98,069.08 : x
  2. Step 2: Convert to fraction form
    266,430.52/399,803.40 = 98,069.08/x
  3. Step 3: Cross multiply
    266,430.52x = 399,803.40 × 98,069.08
  4. Step 4: Simplify right side
    266,430.52x = 39,208,351,618.87
  5. Step 5: Solve for x
    x = 39,208,351,618.87/266,430.52
  6. Step 6: Final answer
    x = 147,161.64

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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.