Home / 430,927.85-646,391.77-135,439.85

Finding the Fourth Proportional to 430,927.85, 646,391.77 and 135,439.85

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Solution

The fourth proportional to 430,927.85, 646,391.77 and 135,439.85 is: 203,159.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,927.85 : 646,391.77 = 135,439.85 : x
  2. Step 2: Convert to fraction form
    430,927.85/646,391.77 = 135,439.85/x
  3. Step 3: Cross multiply
    430,927.85x = 646,391.77 × 135,439.85
  4. Step 4: Simplify right side
    430,927.85x = 87,547,200,460.88
  5. Step 5: Solve for x
    x = 87,547,200,460.88/430,927.85
  6. Step 6: Final answer
    x = 203,159.77

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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.