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Finding the Fourth Proportional to 522,130.51, 720,401.19 and 301,311.85

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Solution

The fourth proportional to 522,130.51, 720,401.19 and 301,311.85 is: 415,730.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,130.51 : 720,401.19 = 301,311.85 : x
  2. Step 2: Convert to fraction form
    522,130.51/720,401.19 = 301,311.85/x
  3. Step 3: Cross multiply
    522,130.51x = 720,401.19 × 301,311.85
  4. Step 4: Simplify right side
    522,130.51x = 217,065,415,301.10
  5. Step 5: Solve for x
    x = 217,065,415,301.10/522,130.51
  6. Step 6: Final answer
    x = 415,730.19

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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.