Home / 430,159.52-645,370.56-219,945.08

Finding the Fourth Proportional to 430,159.52, 645,370.56 and 219,945.08

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Solution

The fourth proportional to 430,159.52, 645,370.56 and 219,945.08 is: 329,984.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,159.52 : 645,370.56 = 219,945.08 : x
  2. Step 2: Convert to fraction form
    430,159.52/645,370.56 = 219,945.08/x
  3. Step 3: Cross multiply
    430,159.52x = 645,370.56 × 219,945.08
  4. Step 4: Simplify right side
    430,159.52x = 141,946,079,448.85
  5. Step 5: Solve for x
    x = 141,946,079,448.85/430,159.52
  6. Step 6: Final answer
    x = 329,984.74

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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.