Home / 354,405,312.40-531,605,737.82-190,720,172.20

Finding the Fourth Proportional to 354,405,312.40, 531,605,737.82 and 190,720,172.20

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Solution

The fourth proportional to 354,405,312.40, 531,605,737.82 and 190,720,172.20 is: 286,079,057.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,405,312.40 : 531,605,737.82 = 190,720,172.20 : x
  2. Step 2: Convert to fraction form
    354,405,312.40/531,605,737.82 = 190,720,172.20/x
  3. Step 3: Cross multiply
    354,405,312.40x = 531,605,737.82 × 190,720,172.20
  4. Step 4: Simplify right side
    354,405,312.40x = 101,387,937,859,538,448
  5. Step 5: Solve for x
    x = 101,387,937,859,538,448/354,405,312.40
  6. Step 6: Final answer
    x = 286,079,057.82

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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.