Home / 387,168,257.78-534,292,272.60-210,956,253.14

Finding the Fourth Proportional to 387,168,257.78, 534,292,272.60 and 210,956,253.14

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Solution

The fourth proportional to 387,168,257.78, 534,292,272.60 and 210,956,253.14 is: 291,119,671.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,168,257.78 : 534,292,272.60 = 210,956,253.14 : x
  2. Step 2: Convert to fraction form
    387,168,257.78/534,292,272.60 = 210,956,253.14/x
  3. Step 3: Cross multiply
    387,168,257.78x = 534,292,272.60 × 210,956,253.14
  4. Step 4: Simplify right side
    387,168,257.78x = 112,712,295,909,351,488
  5. Step 5: Solve for x
    x = 112,712,295,909,351,488/387,168,257.78
  6. Step 6: Final answer
    x = 291,119,671.21

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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.