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Finding the Fourth Proportional to 371,274.85, 512,271.47 and 210,129.89

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Solution

The fourth proportional to 371,274.85, 512,271.47 and 210,129.89 is: 289,929.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,274.85 : 512,271.47 = 210,129.89 : x
  2. Step 2: Convert to fraction form
    371,274.85/512,271.47 = 210,129.89/x
  3. Step 3: Cross multiply
    371,274.85x = 512,271.47 × 210,129.89
  4. Step 4: Simplify right side
    371,274.85x = 107,643,549,709.90
  5. Step 5: Solve for x
    x = 107,643,549,709.90/371,274.85
  6. Step 6: Final answer
    x = 289,929.55

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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.