Home / 430,510.95-645,790.73-131,001.30

Finding the Fourth Proportional to 430,510.95, 645,790.73 and 131,001.30

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Solution

The fourth proportional to 430,510.95, 645,790.73 and 131,001.30 is: 196,509.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,510.95 : 645,790.73 = 131,001.30 : x
  2. Step 2: Convert to fraction form
    430,510.95/645,790.73 = 131,001.30/x
  3. Step 3: Cross multiply
    430,510.95x = 645,790.73 × 131,001.30
  4. Step 4: Simplify right side
    430,510.95x = 84,599,424,502.94
  5. Step 5: Solve for x
    x = 84,599,424,502.94/430,510.95
  6. Step 6: Final answer
    x = 196,509.34

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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.