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Finding the Fourth Proportional to 328,210.65, 492,332.18 and 170,746.65

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Solution

The fourth proportional to 328,210.65, 492,332.18 and 170,746.65 is: 256,128.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,210.65 : 492,332.18 = 170,746.65 : x
  2. Step 2: Convert to fraction form
    328,210.65/492,332.18 = 170,746.65/x
  3. Step 3: Cross multiply
    328,210.65x = 492,332.18 × 170,746.65
  4. Step 4: Simplify right side
    328,210.65x = 84,064,069,568.46
  5. Step 5: Solve for x
    x = 84,064,069,568.46/328,210.65
  6. Step 6: Final answer
    x = 256,128.40

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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.