Home / 421,155.95-631,438.04-147,535.22

Finding the Fourth Proportional to 421,155.95, 631,438.04 and 147,535.22

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Solution

The fourth proportional to 421,155.95, 631,438.04 and 147,535.22 is: 221,199.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,155.95 : 631,438.04 = 147,535.22 : x
  2. Step 2: Convert to fraction form
    421,155.95/631,438.04 = 147,535.22/x
  3. Step 3: Cross multiply
    421,155.95x = 631,438.04 × 147,535.22
  4. Step 4: Simplify right side
    421,155.95x = 93,159,346,990.58
  5. Step 5: Solve for x
    x = 93,159,346,990.58/421,155.95
  6. Step 6: Final answer
    x = 221,199.17

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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.