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Finding the Fourth Proportional to 448,875.79, 619,016.50 and 302,031.49

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Solution

The fourth proportional to 448,875.79, 619,016.50 and 302,031.49 is: 416,512.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,875.79 : 619,016.50 = 302,031.49 : x
  2. Step 2: Convert to fraction form
    448,875.79/619,016.50 = 302,031.49/x
  3. Step 3: Cross multiply
    448,875.79x = 619,016.50 × 302,031.49
  4. Step 4: Simplify right side
    448,875.79x = 186,962,475,829.59
  5. Step 5: Solve for x
    x = 186,962,475,829.59/448,875.79
  6. Step 6: Final answer
    x = 416,512.72

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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.