Finding the Fourth Proportional to 390,930.40, 539,541.84 and 247,703.77
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Solution
The fourth proportional to 390,930.40, 539,541.84 and 247,703.77 is: 341,867.88
Step by Step Solution
- Step 1: Write the proportion equation
390,930.40 : 539,541.84 = 247,703.77 : x - Step 2: Convert to fraction form
390,930.40/539,541.84 = 247,703.77/x - Step 3: Cross multiply
390,930.40x = 539,541.84 × 247,703.77 - Step 4: Simplify right side
390,930.40x = 133,646,547,840.74 - Step 5: Solve for x
x = 133,646,547,840.74/390,930.40 - Step 6: Final answer
x = 341,867.88
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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.