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Finding the Fourth Proportional to 328,457.58, 453,394.74 and 215,287.62

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Solution

The fourth proportional to 328,457.58, 453,394.74 and 215,287.62 is: 297,177.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,457.58 : 453,394.74 = 215,287.62 : x
  2. Step 2: Convert to fraction form
    328,457.58/453,394.74 = 215,287.62/x
  3. Step 3: Cross multiply
    328,457.58x = 453,394.74 × 215,287.62
  4. Step 4: Simplify right side
    328,457.58x = 97,610,274,495.12
  5. Step 5: Solve for x
    x = 97,610,274,495.12/328,457.58
  6. Step 6: Final answer
    x = 297,177.72

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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.