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Finding the Fourth Proportional to 149,688,008.40, 209,053,028.40 and 149,688,008.40

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Solution

The fourth proportional to 149,688,008.40, 209,053,028.40 and 149,688,008.40 is: 209,053,028.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,688,008.40 : 209,053,028.40 = 149,688,008.40 : x
  2. Step 2: Convert to fraction form
    149,688,008.40/209,053,028.40 = 149,688,008.40/x
  3. Step 3: Cross multiply
    149,688,008.40x = 209,053,028.40 × 149,688,008.40
  4. Step 4: Simplify right side
    149,688,008.40x = 31,292,731,471,184,640
  5. Step 5: Solve for x
    x = 31,292,731,471,184,640/149,688,008.40
  6. Step 6: Final answer
    x = 209,053,028.40

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.