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Finding the Fourth Proportional to 520,230, 717,975.72 and 293,890.08

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Solution

The fourth proportional to 520,230, 717,975.72 and 293,890.08 is: 405,601.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,230 : 717,975.72 = 293,890.08 : x
  2. Step 2: Convert to fraction form
    520,230/717,975.72 = 293,890.08/x
  3. Step 3: Cross multiply
    520,230x = 717,975.72 × 293,890.08
  4. Step 4: Simplify right side
    520,230x = 211,005,941,788.86
  5. Step 5: Solve for x
    x = 211,005,941,788.86/520,230
  6. Step 6: Final answer
    x = 405,601.26

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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.