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Finding the Fourth Proportional to 315,290.15, 435,096.83 and 172,052.63

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Solution

The fourth proportional to 315,290.15, 435,096.83 and 172,052.63 is: 237,430.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,290.15 : 435,096.83 = 172,052.63 : x
  2. Step 2: Convert to fraction form
    315,290.15/435,096.83 = 172,052.63/x
  3. Step 3: Cross multiply
    315,290.15x = 435,096.83 × 172,052.63
  4. Step 4: Simplify right side
    315,290.15x = 74,859,553,045.90
  5. Step 5: Solve for x
    x = 74,859,553,045.90/315,290.15
  6. Step 6: Final answer
    x = 237,430.67

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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.