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Finding the Fourth Proportional to 318,455.74, 439,459.86 and 175,215.88

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Solution

The fourth proportional to 318,455.74, 439,459.86 and 175,215.88 is: 241,792.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,455.74 : 439,459.86 = 175,215.88 : x
  2. Step 2: Convert to fraction form
    318,455.74/439,459.86 = 175,215.88/x
  3. Step 3: Cross multiply
    318,455.74x = 439,459.86 × 175,215.88
  4. Step 4: Simplify right side
    318,455.74x = 77,000,346,094.58
  5. Step 5: Solve for x
    x = 77,000,346,094.58/318,455.74
  6. Step 6: Final answer
    x = 241,792.93

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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.