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Finding the Fourth Proportional to 210,404,225.20, 315,606,337.80 and 210,404,225.20

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Solution

The fourth proportional to 210,404,225.20, 315,606,337.80 and 210,404,225.20 is: 315,606,337.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,404,225.20 : 315,606,337.80 = 210,404,225.20 : x
  2. Step 2: Convert to fraction form
    210,404,225.20/315,606,337.80 = 210,404,225.20/x
  3. Step 3: Cross multiply
    210,404,225.20x = 315,606,337.80 × 210,404,225.20
  4. Step 4: Simplify right side
    210,404,225.20x = 66,404,906,973,018,472
  5. Step 5: Solve for x
    x = 66,404,906,973,018,472/210,404,225.20
  6. Step 6: Final answer
    x = 315,606,337.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.