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Finding the Fourth Proportional to 199,672,330.40, 299,564,482.80 and 84,711,946.40

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Solution

The fourth proportional to 199,672,330.40, 299,564,482.80 and 84,711,946.40 is: 127,091,672.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,672,330.40 : 299,564,482.80 = 84,711,946.40 : x
  2. Step 2: Convert to fraction form
    199,672,330.40/299,564,482.80 = 84,711,946.40/x
  3. Step 3: Cross multiply
    199,672,330.40x = 299,564,482.80 × 84,711,946.40
  4. Step 4: Simplify right side
    199,672,330.40x = 25,376,690,410,297,324
  5. Step 5: Solve for x
    x = 25,376,690,410,297,324/199,672,330.40
  6. Step 6: Final answer
    x = 127,091,672.44

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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.