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Finding the Fourth Proportional to 292,653.60, 439,126.20 and 166,390.80

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Solution

The fourth proportional to 292,653.60, 439,126.20 and 166,390.80 is: 249,669.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,653.60 : 439,126.20 = 166,390.80 : x
  2. Step 2: Convert to fraction form
    292,653.60/439,126.20 = 166,390.80/x
  3. Step 3: Cross multiply
    292,653.60x = 439,126.20 × 166,390.80
  4. Step 4: Simplify right side
    292,653.60x = 73,066,559,718.96
  5. Step 5: Solve for x
    x = 73,066,559,718.96/292,653.60
  6. Step 6: Final answer
    x = 249,669.10

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1.5x scale

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.