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Finding the Fourth Proportional to 295,430.40, 443,145.60 and 98,438.40

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Solution

The fourth proportional to 295,430.40, 443,145.60 and 98,438.40 is: 147,657.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    295,430.40 : 443,145.60 = 98,438.40 : x
  2. Step 2: Convert to fraction form
    295,430.40/443,145.60 = 98,438.40/x
  3. Step 3: Cross multiply
    295,430.40x = 443,145.60 × 98,438.40
  4. Step 4: Simplify right side
    295,430.40x = 43,622,543,831.04
  5. Step 5: Solve for x
    x = 43,622,543,831.04/295,430.40
  6. Step 6: Final answer
    x = 147,657.60

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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.