Home / 319,316.80-478,975.20-240,001.60

Finding the Fourth Proportional to 319,316.80, 478,975.20 and 240,001.60

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Solution

The fourth proportional to 319,316.80, 478,975.20 and 240,001.60 is: 360,002.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,316.80 : 478,975.20 = 240,001.60 : x
  2. Step 2: Convert to fraction form
    319,316.80/478,975.20 = 240,001.60/x
  3. Step 3: Cross multiply
    319,316.80x = 478,975.20 × 240,001.60
  4. Step 4: Simplify right side
    319,316.80x = 114,954,814,360.32
  5. Step 5: Solve for x
    x = 114,954,814,360.32/319,316.80
  6. Step 6: Final answer
    x = 360,002.40

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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.