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Finding the Fourth Proportional to 522,131.51, 720,402.57 and 301,312.85

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Solution

The fourth proportional to 522,131.51, 720,402.57 and 301,312.85 is: 415,731.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,131.51 : 720,402.57 = 301,312.85 : x
  2. Step 2: Convert to fraction form
    522,131.51/720,402.57 = 301,312.85/x
  3. Step 3: Cross multiply
    522,131.51x = 720,402.57 × 301,312.85
  4. Step 4: Simplify right side
    522,131.51x = 217,066,551,514.02
  5. Step 5: Solve for x
    x = 217,066,551,514.02/522,131.51
  6. Step 6: Final answer
    x = 415,731.57

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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.