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Finding the Fourth Proportional to 371,412.60, 513,030.18 and 307,141.46

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Solution

The fourth proportional to 371,412.60, 513,030.18 and 307,141.46 is: 424,252.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,412.60 : 513,030.18 = 307,141.46 : x
  2. Step 2: Convert to fraction form
    371,412.60/513,030.18 = 307,141.46/x
  3. Step 3: Cross multiply
    371,412.60x = 513,030.18 × 307,141.46
  4. Step 4: Simplify right side
    371,412.60x = 157,572,835,944.11
  5. Step 5: Solve for x
    x = 157,572,835,944.11/371,412.60
  6. Step 6: Final answer
    x = 424,252.80

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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.