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Finding the Fourth Proportional to 318,368.40, 439,345.94 and 175,125.30

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Solution

The fourth proportional to 318,368.40, 439,345.94 and 175,125.30 is: 241,671.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,368.40 : 439,345.94 = 175,125.30 : x
  2. Step 2: Convert to fraction form
    318,368.40/439,345.94 = 175,125.30/x
  3. Step 3: Cross multiply
    318,368.40x = 439,345.94 × 175,125.30
  4. Step 4: Simplify right side
    318,368.40x = 76,940,588,670.66
  5. Step 5: Solve for x
    x = 76,940,588,670.66/318,368.40
  6. Step 6: Final answer
    x = 241,671.56

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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.