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Finding the Fourth Proportional to 274,852.79, 379,307.72 and 153,995.06

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Solution

The fourth proportional to 274,852.79, 379,307.72 and 153,995.06 is: 212,519.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,852.79 : 379,307.72 = 153,995.06 : x
  2. Step 2: Convert to fraction form
    274,852.79/379,307.72 = 153,995.06/x
  3. Step 3: Cross multiply
    274,852.79x = 379,307.72 × 153,995.06
  4. Step 4: Simplify right side
    274,852.79x = 58,411,514,329.89
  5. Step 5: Solve for x
    x = 58,411,514,329.89/274,852.79
  6. Step 6: Final answer
    x = 212,519.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.