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Finding the Fourth Proportional to 371,289.60, 556,934.40 and 90,809.60

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Solution

The fourth proportional to 371,289.60, 556,934.40 and 90,809.60 is: 136,214.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,289.60 : 556,934.40 = 90,809.60 : x
  2. Step 2: Convert to fraction form
    371,289.60/556,934.40 = 90,809.60/x
  3. Step 3: Cross multiply
    371,289.60x = 556,934.40 × 90,809.60
  4. Step 4: Simplify right side
    371,289.60x = 50,574,990,090.24
  5. Step 5: Solve for x
    x = 50,574,990,090.24/371,289.60
  6. Step 6: Final answer
    x = 136,214.40

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1.5x scale

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.