Home / 420,191,664.72-630,372,531.96-147,583,689.36

Finding the Fourth Proportional to 420,191,664.72, 630,372,531.96 and 147,583,689.36

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Solution

The fourth proportional to 420,191,664.72, 630,372,531.96 and 147,583,689.36 is: 221,405,400.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,191,664.72 : 630,372,531.96 = 147,583,689.36 : x
  2. Step 2: Convert to fraction form
    420,191,664.72/630,372,531.96 = 147,583,689.36/x
  3. Step 3: Cross multiply
    420,191,664.72x = 630,372,531.96 × 147,583,689.36
  4. Step 4: Simplify right side
    420,191,664.72x = 93,032,703,937,861,328
  5. Step 5: Solve for x
    x = 93,032,703,937,861,328/420,191,664.72
  6. Step 6: Final answer
    x = 221,405,400.79

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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.