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Finding the Fourth Proportional to 320,319.86, 480,479.72 and 293,590.71

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Solution

The fourth proportional to 320,319.86, 480,479.72 and 293,590.71 is: 440,385.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,319.86 : 480,479.72 = 293,590.71 : x
  2. Step 2: Convert to fraction form
    320,319.86/480,479.72 = 293,590.71/x
  3. Step 3: Cross multiply
    320,319.86x = 480,479.72 × 293,590.71
  4. Step 4: Simplify right side
    320,319.86x = 141,064,379,733.00
  5. Step 5: Solve for x
    x = 141,064,379,733.00/320,319.86
  6. Step 6: Final answer
    x = 440,385.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.