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Finding the Fourth Proportional to 210,547.68, 290,559.60 and 115,058.40

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Solution

The fourth proportional to 210,547.68, 290,559.60 and 115,058.40 is: 158,782.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,547.68 : 290,559.60 = 115,058.40 : x
  2. Step 2: Convert to fraction form
    210,547.68/290,559.60 = 115,058.40/x
  3. Step 3: Cross multiply
    210,547.68x = 290,559.60 × 115,058.40
  4. Step 4: Simplify right side
    210,547.68x = 33,431,322,680.64
  5. Step 5: Solve for x
    x = 33,431,322,680.64/210,547.68
  6. Step 6: Final answer
    x = 158,782.67

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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.