Home / 387,072,038.20-534,159,175.02-213,231,782.20

Finding the Fourth Proportional to 387,072,038.20, 534,159,175.02 and 213,231,782.20

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Solution

The fourth proportional to 387,072,038.20, 534,159,175.02 and 213,231,782.20 is: 294,259,728.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,072,038.20 : 534,159,175.02 = 213,231,782.20 : x
  2. Step 2: Convert to fraction form
    387,072,038.20/534,159,175.02 = 213,231,782.20/x
  3. Step 3: Cross multiply
    387,072,038.20x = 534,159,175.02 × 213,231,782.20
  4. Step 4: Simplify right side
    387,072,038.20x = 113,899,712,867,996,304
  5. Step 5: Solve for x
    x = 113,899,712,867,996,304/387,072,038.20
  6. Step 6: Final answer
    x = 294,259,728.49

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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.