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Finding the Fourth Proportional to 499,903.40, 689,864.82 and 270,459.95

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Solution

The fourth proportional to 499,903.40, 689,864.82 and 270,459.95 is: 373,233.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,903.40 : 689,864.82 = 270,459.95 : x
  2. Step 2: Convert to fraction form
    499,903.40/689,864.82 = 270,459.95/x
  3. Step 3: Cross multiply
    499,903.40x = 689,864.82 × 270,459.95
  4. Step 4: Simplify right side
    499,903.40x = 186,580,801,274.64
  5. Step 5: Solve for x
    x = 186,580,801,274.64/499,903.40
  6. Step 6: Final answer
    x = 373,233.72

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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.