Home / 266,938,218.40-400,407,327.60-209,607,325.60

Finding the Fourth Proportional to 266,938,218.40, 400,407,327.60 and 209,607,325.60

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Solution

The fourth proportional to 266,938,218.40, 400,407,327.60 and 209,607,325.60 is: 314,410,988.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,938,218.40 : 400,407,327.60 = 209,607,325.60 : x
  2. Step 2: Convert to fraction form
    266,938,218.40/400,407,327.60 = 209,607,325.60/x
  3. Step 3: Cross multiply
    266,938,218.40x = 400,407,327.60 × 209,607,325.60
  4. Step 4: Simplify right side
    266,938,218.40x = 83,928,309,088,879,072
  5. Step 5: Solve for x
    x = 83,928,309,088,879,072/266,938,218.40
  6. Step 6: Final answer
    x = 314,410,988.40

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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.