Home / 426,055.12-639,413.16-160,057.60

Finding the Fourth Proportional to 426,055.12, 639,413.16 and 160,057.60

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Solution

The fourth proportional to 426,055.12, 639,413.16 and 160,057.60 is: 240,210.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,055.12 : 639,413.16 = 160,057.60 : x
  2. Step 2: Convert to fraction form
    426,055.12/639,413.16 = 160,057.60/x
  3. Step 3: Cross multiply
    426,055.12x = 639,413.16 × 160,057.60
  4. Step 4: Simplify right side
    426,055.12x = 102,342,935,798.02
  5. Step 5: Solve for x
    x = 102,342,935,798.02/426,055.12
  6. Step 6: Final answer
    x = 240,210.55

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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.