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Finding the Fourth Proportional to 307,632.40, 461,707.80 and 139,411.60

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Solution

The fourth proportional to 307,632.40, 461,707.80 and 139,411.60 is: 209,234.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,632.40 : 461,707.80 = 139,411.60 : x
  2. Step 2: Convert to fraction form
    307,632.40/461,707.80 = 139,411.60/x
  3. Step 3: Cross multiply
    307,632.40x = 461,707.80 × 139,411.60
  4. Step 4: Simplify right side
    307,632.40x = 64,367,423,130.48
  5. Step 5: Solve for x
    x = 64,367,423,130.48/307,632.40
  6. Step 6: Final answer
    x = 209,234.86

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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.