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Finding the Fourth Proportional to 660,328.52, 990,886.26 and 239,637.20

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Solution

The fourth proportional to 660,328.52, 990,886.26 and 239,637.20 is: 359,598.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,328.52 : 990,886.26 = 239,637.20 : x
  2. Step 2: Convert to fraction form
    660,328.52/990,886.26 = 239,637.20/x
  3. Step 3: Cross multiply
    660,328.52x = 990,886.26 × 239,637.20
  4. Step 4: Simplify right side
    660,328.52x = 237,453,208,864.87
  5. Step 5: Solve for x
    x = 237,453,208,864.87/660,328.52
  6. Step 6: Final answer
    x = 359,598.60

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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.