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Finding the Fourth Proportional to 312,063.60, 430,643.57 and 174,244.67

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Solution

The fourth proportional to 312,063.60, 430,643.57 and 174,244.67 is: 240,455.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,063.60 : 430,643.57 = 174,244.67 : x
  2. Step 2: Convert to fraction form
    312,063.60/430,643.57 = 174,244.67/x
  3. Step 3: Cross multiply
    312,063.60x = 430,643.57 × 174,244.67
  4. Step 4: Simplify right side
    312,063.60x = 75,037,343,717.83
  5. Step 5: Solve for x
    x = 75,037,343,717.83/312,063.60
  6. Step 6: Final answer
    x = 240,455.29

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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.