Home / 312,520.08-431,276.88-169,280.52

Finding the Fourth Proportional to 312,520.08, 431,276.88 and 169,280.52

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Solution

The fourth proportional to 312,520.08, 431,276.88 and 169,280.52 is: 233,606.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,520.08 : 431,276.88 = 169,280.52 : x
  2. Step 2: Convert to fraction form
    312,520.08/431,276.88 = 169,280.52/x
  3. Step 3: Cross multiply
    312,520.08x = 431,276.88 × 169,280.52
  4. Step 4: Simplify right side
    312,520.08x = 73,006,774,510.38
  5. Step 5: Solve for x
    x = 73,006,774,510.38/312,520.08
  6. Step 6: Final answer
    x = 233,606.67

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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.