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Finding the Fourth Proportional to 317,259.36, 437,897.52 and 215,457.12

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Solution

The fourth proportional to 317,259.36, 437,897.52 and 215,457.12 is: 297,384.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,259.36 : 437,897.52 = 215,457.12 : x
  2. Step 2: Convert to fraction form
    317,259.36/437,897.52 = 215,457.12/x
  3. Step 3: Cross multiply
    317,259.36x = 437,897.52 × 215,457.12
  4. Step 4: Simplify right side
    317,259.36x = 94,348,138,514.34
  5. Step 5: Solve for x
    x = 94,348,138,514.34/317,259.36
  6. Step 6: Final answer
    x = 297,384.89

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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.