Home / 390,223,691.29-538,518,580.91-214,018,701.85

Finding the Fourth Proportional to 390,223,691.29, 538,518,580.91 and 214,018,701.85

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Solution

The fourth proportional to 390,223,691.29, 538,518,580.91 and 214,018,701.85 is: 295,351,231.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,223,691.29 : 538,518,580.91 = 214,018,701.85 : x
  2. Step 2: Convert to fraction form
    390,223,691.29/538,518,580.91 = 214,018,701.85/x
  3. Step 3: Cross multiply
    390,223,691.29x = 538,518,580.91 × 214,018,701.85
  4. Step 4: Simplify right side
    390,223,691.29x = 115,253,047,608,462,384
  5. Step 5: Solve for x
    x = 115,253,047,608,462,384/390,223,691.29
  6. Step 6: Final answer
    x = 295,351,231.05

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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.