Home / 346,708.12-478,314.72-210,720.16

Finding the Fourth Proportional to 346,708.12, 478,314.72 and 210,720.16

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Solution

The fourth proportional to 346,708.12, 478,314.72 and 210,720.16 is: 290,707.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,708.12 : 478,314.72 = 210,720.16 : x
  2. Step 2: Convert to fraction form
    346,708.12/478,314.72 = 210,720.16/x
  3. Step 3: Cross multiply
    346,708.12x = 478,314.72 × 210,720.16
  4. Step 4: Simplify right side
    346,708.12x = 100,790,554,328.76
  5. Step 5: Solve for x
    x = 100,790,554,328.76/346,708.12
  6. Step 6: Final answer
    x = 290,707.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.