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Finding the Fourth Proportional to 420,010.61, 630,014.70 and 104,467.51

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Solution

The fourth proportional to 420,010.61, 630,014.70 and 104,467.51 is: 156,700.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,010.61 : 630,014.70 = 104,467.51 : x
  2. Step 2: Convert to fraction form
    420,010.61/630,014.70 = 104,467.51/x
  3. Step 3: Cross multiply
    420,010.61x = 630,014.70 × 104,467.51
  4. Step 4: Simplify right side
    420,010.61x = 65,816,065,397.36
  5. Step 5: Solve for x
    x = 65,816,065,397.36/420,010.61
  6. Step 6: Final answer
    x = 156,700.96

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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.