Home / 280,038,718.40-420,058,077.60-242,289,982.40

Finding the Fourth Proportional to 280,038,718.40, 420,058,077.60 and 242,289,982.40

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Solution

The fourth proportional to 280,038,718.40, 420,058,077.60 and 242,289,982.40 is: 363,434,973.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,038,718.40 : 420,058,077.60 = 242,289,982.40 : x
  2. Step 2: Convert to fraction form
    280,038,718.40/420,058,077.60 = 242,289,982.40/x
  3. Step 3: Cross multiply
    280,038,718.40x = 420,058,077.60 × 242,289,982.40
  4. Step 4: Simplify right side
    280,038,718.40x = 101,775,864,228,681,840
  5. Step 5: Solve for x
    x = 101,775,864,228,681,840/280,038,718.40
  6. Step 6: Final answer
    x = 363,434,973.60

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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.