Home / 387,013,132.80-534,078,854.40-210,800,582.40

Finding the Fourth Proportional to 387,013,132.80, 534,078,854.40 and 210,800,582.40

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Solution

The fourth proportional to 387,013,132.80, 534,078,854.40 and 210,800,582.40 is: 290,905,201.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,013,132.80 : 534,078,854.40 = 210,800,582.40 : x
  2. Step 2: Convert to fraction form
    387,013,132.80/534,078,854.40 = 210,800,582.40/x
  3. Step 3: Cross multiply
    387,013,132.80x = 534,078,854.40 × 210,800,582.40
  4. Step 4: Simplify right side
    387,013,132.80x = 112,584,133,555,044,800
  5. Step 5: Solve for x
    x = 112,584,133,555,044,800/387,013,132.80
  6. Step 6: Final answer
    x = 290,905,201.95

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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.