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Finding the Fourth Proportional to 315,661.65, 473,303.53 and 147,220.12

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Solution

The fourth proportional to 315,661.65, 473,303.53 and 147,220.12 is: 220,742.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,661.65 : 473,303.53 = 147,220.12 : x
  2. Step 2: Convert to fraction form
    315,661.65/473,303.53 = 147,220.12/x
  3. Step 3: Cross multiply
    315,661.65x = 473,303.53 × 147,220.12
  4. Step 4: Simplify right side
    315,661.65x = 69,679,802,483.02
  5. Step 5: Solve for x
    x = 69,679,802,483.02/315,661.65
  6. Step 6: Final answer
    x = 220,742.06

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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.