Home / 208,011,659.40-312,017,489.10-100,516,235.40

Finding the Fourth Proportional to 208,011,659.40, 312,017,489.10 and 100,516,235.40

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Solution

The fourth proportional to 208,011,659.40, 312,017,489.10 and 100,516,235.40 is: 150,774,353.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,011,659.40 : 312,017,489.10 = 100,516,235.40 : x
  2. Step 2: Convert to fraction form
    208,011,659.40/312,017,489.10 = 100,516,235.40/x
  3. Step 3: Cross multiply
    208,011,659.40x = 312,017,489.10 × 100,516,235.40
  4. Step 4: Simplify right side
    208,011,659.40x = 31,362,823,383,292,540
  5. Step 5: Solve for x
    x = 31,362,823,383,292,540/208,011,659.40
  6. Step 6: Final answer
    x = 150,774,353.10

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1.5x scale

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.