Home / 385,870.79-578,828.07-119,669.15

Finding the Fourth Proportional to 385,870.79, 578,828.07 and 119,669.15

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Solution

The fourth proportional to 385,870.79, 578,828.07 and 119,669.15 is: 179,510.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,870.79 : 578,828.07 = 119,669.15 : x
  2. Step 2: Convert to fraction form
    385,870.79/578,828.07 = 119,669.15/x
  3. Step 3: Cross multiply
    385,870.79x = 578,828.07 × 119,669.15
  4. Step 4: Simplify right side
    385,870.79x = 69,267,863,133.04
  5. Step 5: Solve for x
    x = 69,267,863,133.04/385,870.79
  6. Step 6: Final answer
    x = 179,510.51

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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.