Home / 258,444,833.60-387,667,250.40-212,528,331.20

Finding the Fourth Proportional to 258,444,833.60, 387,667,250.40 and 212,528,331.20

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Solution

The fourth proportional to 258,444,833.60, 387,667,250.40 and 212,528,331.20 is: 318,792,496.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,444,833.60 : 387,667,250.40 = 212,528,331.20 : x
  2. Step 2: Convert to fraction form
    258,444,833.60/387,667,250.40 = 212,528,331.20/x
  3. Step 3: Cross multiply
    258,444,833.60x = 387,667,250.40 × 212,528,331.20
  4. Step 4: Simplify right side
    258,444,833.60x = 82,390,273,788,404,528
  5. Step 5: Solve for x
    x = 82,390,273,788,404,528/258,444,833.60
  6. Step 6: Final answer
    x = 318,792,496.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.