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Finding the Fourth Proportional to 292,117.80, 438,176.70 and 286,212.90

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Solution

The fourth proportional to 292,117.80, 438,176.70 and 286,212.90 is: 429,319.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,117.80 : 438,176.70 = 286,212.90 : x
  2. Step 2: Convert to fraction form
    292,117.80/438,176.70 = 286,212.90/x
  3. Step 3: Cross multiply
    292,117.80x = 438,176.70 × 286,212.90
  4. Step 4: Simplify right side
    292,117.80x = 125,411,824,019.43
  5. Step 5: Solve for x
    x = 125,411,824,019.43/292,117.80
  6. Step 6: Final answer
    x = 429,319.35

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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.