Home / 387,398,046.76-534,604,886.48-211,182,154.72

Finding the Fourth Proportional to 387,398,046.76, 534,604,886.48 and 211,182,154.72

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Solution

The fourth proportional to 387,398,046.76, 534,604,886.48 and 211,182,154.72 is: 291,428,965.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,398,046.76 : 534,604,886.48 = 211,182,154.72 : x
  2. Step 2: Convert to fraction form
    387,398,046.76/534,604,886.48 = 211,182,154.72/x
  3. Step 3: Cross multiply
    387,398,046.76x = 534,604,886.48 × 211,182,154.72
  4. Step 4: Simplify right side
    387,398,046.76x = 112,899,011,849,878,848
  5. Step 5: Solve for x
    x = 112,899,011,849,878,848/387,398,046.76
  6. Step 6: Final answer
    x = 291,428,965.10

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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.