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Finding the Fourth Proportional to 379,021.77, 525,445.22 and 358,797.49

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Solution

The fourth proportional to 379,021.77, 525,445.22 and 358,797.49 is: 497,407.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,021.77 : 525,445.22 = 358,797.49 : x
  2. Step 2: Convert to fraction form
    379,021.77/525,445.22 = 358,797.49/x
  3. Step 3: Cross multiply
    379,021.77x = 525,445.22 × 358,797.49
  4. Step 4: Simplify right side
    379,021.77x = 188,528,426,068.50
  5. Step 5: Solve for x
    x = 188,528,426,068.50/379,021.77
  6. Step 6: Final answer
    x = 497,407.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.