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Finding the Fourth Proportional to 307,528.40, 461,292.60 and 141,640.40

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Solution

The fourth proportional to 307,528.40, 461,292.60 and 141,640.40 is: 212,460.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,528.40 : 461,292.60 = 141,640.40 : x
  2. Step 2: Convert to fraction form
    307,528.40/461,292.60 = 141,640.40/x
  3. Step 3: Cross multiply
    307,528.40x = 461,292.60 × 141,640.40
  4. Step 4: Simplify right side
    307,528.40x = 65,337,668,381.04
  5. Step 5: Solve for x
    x = 65,337,668,381.04/307,528.40
  6. Step 6: Final answer
    x = 212,460.60

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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.