Home / 430,928.59-646,392.89-135,440.59

Finding the Fourth Proportional to 430,928.59, 646,392.89 and 135,440.59

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Solution

The fourth proportional to 430,928.59, 646,392.89 and 135,440.59 is: 203,160.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,928.59 : 646,392.89 = 135,440.59 : x
  2. Step 2: Convert to fraction form
    430,928.59/646,392.89 = 135,440.59/x
  3. Step 3: Cross multiply
    430,928.59x = 646,392.89 × 135,440.59
  4. Step 4: Simplify right side
    430,928.59x = 87,547,834,393.41
  5. Step 5: Solve for x
    x = 87,547,834,393.41/430,928.59
  6. Step 6: Final answer
    x = 203,160.89

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Similar ratio
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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.