Home / 426,339,600.90-638,502,017.67-208,139,373.06

Finding the Fourth Proportional to 426,339,600.90, 638,502,017.67 and 208,139,373.06

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Solution

The fourth proportional to 426,339,600.90, 638,502,017.67 and 208,139,373.06 is: 311,717,253.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,339,600.90 : 638,502,017.67 = 208,139,373.06 : x
  2. Step 2: Convert to fraction form
    426,339,600.90/638,502,017.67 = 208,139,373.06/x
  3. Step 3: Cross multiply
    426,339,600.90x = 638,502,017.67 × 208,139,373.06
  4. Step 4: Simplify right side
    426,339,600.90x = 132,897,409,655,378,832
  5. Step 5: Solve for x
    x = 132,897,409,655,378,832/426,339,600.90
  6. Step 6: Final answer
    x = 311,717,253.98

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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.