Home / 387,071,715.30-534,158,731.62-213,231,459.30

Finding the Fourth Proportional to 387,071,715.30, 534,158,731.62 and 213,231,459.30

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Solution

The fourth proportional to 387,071,715.30, 534,158,731.62 and 213,231,459.30 is: 294,259,284.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,071,715.30 : 534,158,731.62 = 213,231,459.30 : x
  2. Step 2: Convert to fraction form
    387,071,715.30/534,158,731.62 = 213,231,459.30/x
  3. Step 3: Cross multiply
    387,071,715.30x = 534,158,731.62 × 213,231,459.30
  4. Step 4: Simplify right side
    387,071,715.30x = 113,899,445,841,169,664
  5. Step 5: Solve for x
    x = 113,899,445,841,169,664/387,071,715.30
  6. Step 6: Final answer
    x = 294,259,284.10

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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.