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Finding the Fourth Proportional to 611,088.81, 843,263.16 and 339,156.92

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Solution

The fourth proportional to 611,088.81, 843,263.16 and 339,156.92 is: 468,014.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,088.81 : 843,263.16 = 339,156.92 : x
  2. Step 2: Convert to fraction form
    611,088.81/843,263.16 = 339,156.92/x
  3. Step 3: Cross multiply
    611,088.81x = 843,263.16 × 339,156.92
  4. Step 4: Simplify right side
    611,088.81x = 285,998,536,931.39
  5. Step 5: Solve for x
    x = 285,998,536,931.39/611,088.81
  6. Step 6: Final answer
    x = 468,014.69

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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.