Home / 210,374,586.36-290,311,360.20-117,555,856.92

Finding the Fourth Proportional to 210,374,586.36, 290,311,360.20 and 117,555,856.92

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Solution

The fourth proportional to 210,374,586.36, 290,311,360.20 and 117,555,856.92 is: 162,223,970.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,374,586.36 : 290,311,360.20 = 117,555,856.92 : x
  2. Step 2: Convert to fraction form
    210,374,586.36/290,311,360.20 = 117,555,856.92/x
  3. Step 3: Cross multiply
    210,374,586.36x = 290,311,360.20 × 117,555,856.92
  4. Step 4: Simplify right side
    210,374,586.36x = 34,127,800,721,921,780
  5. Step 5: Solve for x
    x = 34,127,800,721,921,780/210,374,586.36
  6. Step 6: Final answer
    x = 162,223,970.64

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.