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Finding the Fourth Proportional to 390,885.27, 586,413.99 and 222,484.83

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Solution

The fourth proportional to 390,885.27, 586,413.99 and 222,484.83 is: 333,776.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,885.27 : 586,413.99 = 222,484.83 : x
  2. Step 2: Convert to fraction form
    390,885.27/586,413.99 = 222,484.83/x
  3. Step 3: Cross multiply
    390,885.27x = 586,413.99 × 222,484.83
  4. Step 4: Simplify right side
    390,885.27x = 130,468,216,874.77
  5. Step 5: Solve for x
    x = 130,468,216,874.77/390,885.27
  6. Step 6: Final answer
    x = 333,776.24

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1.5x scale

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.