Home / 290,328,023.80-435,492,035.70-145,209,201.40

Finding the Fourth Proportional to 290,328,023.80, 435,492,035.70 and 145,209,201.40

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Solution

The fourth proportional to 290,328,023.80, 435,492,035.70 and 145,209,201.40 is: 217,813,802.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,328,023.80 : 435,492,035.70 = 145,209,201.40 : x
  2. Step 2: Convert to fraction form
    290,328,023.80/435,492,035.70 = 145,209,201.40/x
  3. Step 3: Cross multiply
    290,328,023.80x = 435,492,035.70 × 145,209,201.40
  4. Step 4: Simplify right side
    290,328,023.80x = 63,237,450,720,057,288
  5. Step 5: Solve for x
    x = 63,237,450,720,057,288/290,328,023.80
  6. Step 6: Final answer
    x = 217,813,802.10

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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.