Home / 386,673,416.57-533,654,752.61-217,155,513.49

Finding the Fourth Proportional to 386,673,416.57, 533,654,752.61 and 217,155,513.49

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Solution

The fourth proportional to 386,673,416.57, 533,654,752.61 and 217,155,513.49 is: 299,700,126.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,673,416.57 : 533,654,752.61 = 217,155,513.49 : x
  2. Step 2: Convert to fraction form
    386,673,416.57/533,654,752.61 = 217,155,513.49/x
  3. Step 3: Cross multiply
    386,673,416.57x = 533,654,752.61 × 217,155,513.49
  4. Step 4: Simplify right side
    386,673,416.57x = 115,886,071,829,403,472
  5. Step 5: Solve for x
    x = 115,886,071,829,403,472/386,673,416.57
  6. Step 6: Final answer
    x = 299,700,126.42

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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.