Home / 421,712,187.30-632,976,327.76-203,516,130.66

Finding the Fourth Proportional to 421,712,187.30, 632,976,327.76 and 203,516,130.66

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Solution

The fourth proportional to 421,712,187.30, 632,976,327.76 and 203,516,130.66 is: 305,471,117.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,712,187.30 : 632,976,327.76 = 203,516,130.66 : x
  2. Step 2: Convert to fraction form
    421,712,187.30/632,976,327.76 = 203,516,130.66/x
  3. Step 3: Cross multiply
    421,712,187.30x = 632,976,327.76 × 203,516,130.66
  4. Step 4: Simplify right side
    421,712,187.30x = 128,820,893,025,091,136
  5. Step 5: Solve for x
    x = 128,820,893,025,091,136/421,712,187.30
  6. Step 6: Final answer
    x = 305,471,117.28

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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.