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Finding the Fourth Proportional to 292,087.80, 402,986.70 and 163,005.30

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Solution

The fourth proportional to 292,087.80, 402,986.70 and 163,005.30 is: 224,894.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,087.80 : 402,986.70 = 163,005.30 : x
  2. Step 2: Convert to fraction form
    292,087.80/402,986.70 = 163,005.30/x
  3. Step 3: Cross multiply
    292,087.80x = 402,986.70 × 163,005.30
  4. Step 4: Simplify right side
    292,087.80x = 65,688,967,929.51
  5. Step 5: Solve for x
    x = 65,688,967,929.51/292,087.80
  6. Step 6: Final answer
    x = 224,894.60

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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.