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Finding the Fourth Proportional to 212,328.81, 316,792.16 and 169,434.45

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Solution

The fourth proportional to 212,328.81, 316,792.16 and 169,434.45 is: 252,794.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,328.81 : 316,792.16 = 169,434.45 : x
  2. Step 2: Convert to fraction form
    212,328.81/316,792.16 = 169,434.45/x
  3. Step 3: Cross multiply
    212,328.81x = 316,792.16 × 169,434.45
  4. Step 4: Simplify right side
    212,328.81x = 53,675,502,962.78
  5. Step 5: Solve for x
    x = 53,675,502,962.78/212,328.81
  6. Step 6: Final answer
    x = 252,794.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.