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Finding the Fourth Proportional to 545,710.10, 753,031.08 and 303,987.48

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Solution

The fourth proportional to 545,710.10, 753,031.08 and 303,987.48 is: 419,475.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,710.10 : 753,031.08 = 303,987.48 : x
  2. Step 2: Convert to fraction form
    545,710.10/753,031.08 = 303,987.48/x
  3. Step 3: Cross multiply
    545,710.10x = 753,031.08 × 303,987.48
  4. Step 4: Simplify right side
    545,710.10x = 228,912,021,782.81
  5. Step 5: Solve for x
    x = 228,912,021,782.81/545,710.10
  6. Step 6: Final answer
    x = 419,475.51

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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.