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Finding the Fourth Proportional to 319,995.90, 478,827.45 and 292,002.30

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Solution

The fourth proportional to 319,995.90, 478,827.45 and 292,002.30 is: 436,939.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,995.90 : 478,827.45 = 292,002.30 : x
  2. Step 2: Convert to fraction form
    319,995.90/478,827.45 = 292,002.30/x
  3. Step 3: Cross multiply
    319,995.90x = 478,827.45 × 292,002.30
  4. Step 4: Simplify right side
    319,995.90x = 139,818,716,703.14
  5. Step 5: Solve for x
    x = 139,818,716,703.14/319,995.90
  6. Step 6: Final answer
    x = 436,939.09

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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.