Home / 388,916.60-583,277.70-148,978.40

Finding the Fourth Proportional to 388,916.60, 583,277.70 and 148,978.40

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Solution

The fourth proportional to 388,916.60, 583,277.70 and 148,978.40 is: 223,430.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,916.60 : 583,277.70 = 148,978.40 : x
  2. Step 2: Convert to fraction form
    388,916.60/583,277.70 = 148,978.40/x
  3. Step 3: Cross multiply
    388,916.60x = 583,277.70 × 148,978.40
  4. Step 4: Simplify right side
    388,916.60x = 86,895,778,501.68
  5. Step 5: Solve for x
    x = 86,895,778,501.68/388,916.60
  6. Step 6: Final answer
    x = 223,430.37

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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.