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Finding the Third Proportional to 163,515,658.50 and 358,811,646.75

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Solution

The third proportional to 163,515,658.50 and 358,811,646.75 is: 787,360,666.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,515,658.50 : 358,811,646.75 = 358,811,646.75 : x
  2. Step 2: Convert to fraction form
    163,515,658.50/358,811,646.75 = 358,811,646.75/x
  3. Step 3: Cross multiply
    163,515,658.50x = 358,811,646.75 × 358,811,646.75
  4. Step 4: Simplify right side
    163,515,658.50x = 128,745,797,843,446,784
  5. Step 5: Solve for x
    x = 128,745,797,843,446,784/163,515,658.50
  6. Step 6: Final answer
    x = 787,360,666.40

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.