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Finding the Fourth Proportional to 318,345.48, 439,307.51 and 175,105.49

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Solution

The fourth proportional to 318,345.48, 439,307.51 and 175,105.49 is: 241,640.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,345.48 : 439,307.51 = 175,105.49 : x
  2. Step 2: Convert to fraction form
    318,345.48/439,307.51 = 175,105.49/x
  3. Step 3: Cross multiply
    318,345.48x = 439,307.51 × 175,105.49
  4. Step 4: Simplify right side
    318,345.48x = 76,925,153,727.16
  5. Step 5: Solve for x
    x = 76,925,153,727.16/318,345.48
  6. Step 6: Final answer
    x = 241,640.48

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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.