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Finding the Fourth Proportional to 486,056.40, 728,501.40 and 249,277.20

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Solution

The fourth proportional to 486,056.40, 728,501.40 and 249,277.20 is: 373,616.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,056.40 : 728,501.40 = 249,277.20 : x
  2. Step 2: Convert to fraction form
    486,056.40/728,501.40 = 249,277.20/x
  3. Step 3: Cross multiply
    486,056.40x = 728,501.40 × 249,277.20
  4. Step 4: Simplify right side
    486,056.40x = 181,598,789,188.08
  5. Step 5: Solve for x
    x = 181,598,789,188.08/486,056.40
  6. Step 6: Final answer
    x = 373,616.70

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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.