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Finding the Fourth Proportional to 438,361,947.72, 657,460,714.68 and 219,953,647.08

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Solution

The fourth proportional to 438,361,947.72, 657,460,714.68 and 219,953,647.08 is: 329,889,222.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,361,947.72 : 657,460,714.68 = 219,953,647.08 : x
  2. Step 2: Convert to fraction form
    438,361,947.72/657,460,714.68 = 219,953,647.08/x
  3. Step 3: Cross multiply
    438,361,947.72x = 657,460,714.68 × 219,953,647.08
  4. Step 4: Simplify right side
    438,361,947.72x = 144,610,882,005,689,280
  5. Step 5: Solve for x
    x = 144,610,882,005,689,280/438,361,947.72
  6. Step 6: Final answer
    x = 329,889,222.27

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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.