Home / 289,023,818.61-398,853,263.57-156,864,816.84

Finding the Fourth Proportional to 289,023,818.61, 398,853,263.57 and 156,864,816.84

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Solution

The fourth proportional to 289,023,818.61, 398,853,263.57 and 156,864,816.84 is: 216,473,661.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,023,818.61 : 398,853,263.57 = 156,864,816.84 : x
  2. Step 2: Convert to fraction form
    289,023,818.61/398,853,263.57 = 156,864,816.84/x
  3. Step 3: Cross multiply
    289,023,818.61x = 398,853,263.57 × 156,864,816.84
  4. Step 4: Simplify right side
    289,023,818.61x = 62,566,044,135,159,968
  5. Step 5: Solve for x
    x = 62,566,044,135,159,968/289,023,818.61
  6. Step 6: Final answer
    x = 216,473,661.02

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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.