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Finding the Fourth Proportional to 388,667.68, 583,090.80 and 201,637.60

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Solution

The fourth proportional to 388,667.68, 583,090.80 and 201,637.60 is: 302,502.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,667.68 : 583,090.80 = 201,637.60 : x
  2. Step 2: Convert to fraction form
    388,667.68/583,090.80 = 201,637.60/x
  3. Step 3: Cross multiply
    388,667.68x = 583,090.80 × 201,637.60
  4. Step 4: Simplify right side
    388,667.68x = 117,573,029,494.08
  5. Step 5: Solve for x
    x = 117,573,029,494.08/388,667.68
  6. Step 6: Final answer
    x = 302,502.72

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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.