Home / 280,908,047.20-421,362,070.80-235,558,415.20

Finding the Fourth Proportional to 280,908,047.20, 421,362,070.80 and 235,558,415.20

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Solution

The fourth proportional to 280,908,047.20, 421,362,070.80 and 235,558,415.20 is: 353,337,622.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,908,047.20 : 421,362,070.80 = 235,558,415.20 : x
  2. Step 2: Convert to fraction form
    280,908,047.20/421,362,070.80 = 235,558,415.20/x
  3. Step 3: Cross multiply
    280,908,047.20x = 421,362,070.80 × 235,558,415.20
  4. Step 4: Simplify right side
    280,908,047.20x = 99,255,381,623,038,192
  5. Step 5: Solve for x
    x = 99,255,381,623,038,192/280,908,047.20
  6. Step 6: Final answer
    x = 353,337,622.80

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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.