Home / 430,233.20-645,349.80-243,609.20

Finding the Fourth Proportional to 430,233.20, 645,349.80 and 243,609.20

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Solution

The fourth proportional to 430,233.20, 645,349.80 and 243,609.20 is: 365,413.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,233.20 : 645,349.80 = 243,609.20 : x
  2. Step 2: Convert to fraction form
    430,233.20/645,349.80 = 243,609.20/x
  3. Step 3: Cross multiply
    430,233.20x = 645,349.80 × 243,609.20
  4. Step 4: Simplify right side
    430,233.20x = 157,213,148,498.16
  5. Step 5: Solve for x
    x = 157,213,148,498.16/430,233.20
  6. Step 6: Final answer
    x = 365,413.80

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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.