Home / 420,239.34-579,931.65-229,256.73

Finding the Fourth Proportional to 420,239.34, 579,931.65 and 229,256.73

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Solution

The fourth proportional to 420,239.34, 579,931.65 and 229,256.73 is: 316,375.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,239.34 : 579,931.65 = 229,256.73 : x
  2. Step 2: Convert to fraction form
    420,239.34/579,931.65 = 229,256.73/x
  3. Step 3: Cross multiply
    420,239.34x = 579,931.65 × 229,256.73
  4. Step 4: Simplify right side
    420,239.34x = 132,953,233,702.51
  5. Step 5: Solve for x
    x = 132,953,233,702.51/420,239.34
  6. Step 6: Final answer
    x = 316,375.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.