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Finding the Fourth Proportional to 342,341.40, 512,345.70 and 342,341.40

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Solution

The fourth proportional to 342,341.40, 512,345.70 and 342,341.40 is: 512,345.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,341.40 : 512,345.70 = 342,341.40 : x
  2. Step 2: Convert to fraction form
    342,341.40/512,345.70 = 342,341.40/x
  3. Step 3: Cross multiply
    342,341.40x = 512,345.70 × 342,341.40
  4. Step 4: Simplify right side
    342,341.40x = 175,397,144,221.98
  5. Step 5: Solve for x
    x = 175,397,144,221.98/342,341.40
  6. Step 6: Final answer
    x = 512,345.70

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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.