Home / 280,908,038.80-421,362,058.20-73,646,048.80

Finding the Fourth Proportional to 280,908,038.80, 421,362,058.20 and 73,646,048.80

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Solution

The fourth proportional to 280,908,038.80, 421,362,058.20 and 73,646,048.80 is: 110,469,073.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,908,038.80 : 421,362,058.20 = 73,646,048.80 : x
  2. Step 2: Convert to fraction form
    280,908,038.80/421,362,058.20 = 73,646,048.80/x
  3. Step 3: Cross multiply
    280,908,038.80x = 421,362,058.20 × 73,646,048.80
  4. Step 4: Simplify right side
    280,908,038.80x = 31,031,650,700,665,640
  5. Step 5: Solve for x
    x = 31,031,650,700,665,640/280,908,038.80
  6. Step 6: Final answer
    x = 110,469,073.20

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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.