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Finding the Fourth Proportional to 539,088.40, 808,486.80 and 160,008.40

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Solution

The fourth proportional to 539,088.40, 808,486.80 and 160,008.40 is: 239,969.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,088.40 : 808,486.80 = 160,008.40 : x
  2. Step 2: Convert to fraction form
    539,088.40/808,486.80 = 160,008.40/x
  3. Step 3: Cross multiply
    539,088.40x = 808,486.80 × 160,008.40
  4. Step 4: Simplify right side
    539,088.40x = 129,364,679,289.12
  5. Step 5: Solve for x
    x = 129,364,679,289.12/539,088.40
  6. Step 6: Final answer
    x = 239,969.32

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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.