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Finding the Fourth Proportional to 291,798.39, 402,681.75 and 157,662.39

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Solution

The fourth proportional to 291,798.39, 402,681.75 and 157,662.39 is: 217,574.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,798.39 : 402,681.75 = 157,662.39 : x
  2. Step 2: Convert to fraction form
    291,798.39/402,681.75 = 157,662.39/x
  3. Step 3: Cross multiply
    291,798.39x = 402,681.75 × 157,662.39
  4. Step 4: Simplify right side
    291,798.39x = 63,487,767,114.38
  5. Step 5: Solve for x
    x = 63,487,767,114.38/291,798.39
  6. Step 6: Final answer
    x = 217,574.08

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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.