Home / 289,375,712.64-399,343,014-157,219,326.72

Finding the Fourth Proportional to 289,375,712.64, 399,343,014 and 157,219,326.72

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Solution

The fourth proportional to 289,375,712.64, 399,343,014 and 157,219,326.72 is: 216,965,132.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,375,712.64 : 399,343,014 = 157,219,326.72 : x
  2. Step 2: Convert to fraction form
    289,375,712.64/399,343,014 = 157,219,326.72/x
  3. Step 3: Cross multiply
    289,375,712.64x = 399,343,014 × 157,219,326.72
  4. Step 4: Simplify right side
    289,375,712.64x = 62,784,439,791,415,536
  5. Step 5: Solve for x
    x = 62,784,439,791,415,536/289,375,712.64
  6. Step 6: Final answer
    x = 216,965,132.35

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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.