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Finding the Fourth Proportional to 292,448.40, 403,580.08 and 158,312.40

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Solution

The fourth proportional to 292,448.40, 403,580.08 and 158,312.40 is: 218,471.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,448.40 : 403,580.08 = 158,312.40 : x
  2. Step 2: Convert to fraction form
    292,448.40/403,580.08 = 158,312.40/x
  3. Step 3: Cross multiply
    292,448.40x = 403,580.08 × 158,312.40
  4. Step 4: Simplify right side
    292,448.40x = 63,891,731,056.99
  5. Step 5: Solve for x
    x = 63,891,731,056.99/292,448.40
  6. Step 6: Final answer
    x = 218,471.81

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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.