Finding the Fourth Proportional to 398,427,564.21, 549,830,772.29 and 222,226,916.70
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Solution
The fourth proportional to 398,427,564.21, 549,830,772.29 and 222,226,916.70 is: 306,673,554.26
Step by Step Solution
- Step 1: Write the proportion equation
398,427,564.21 : 549,830,772.29 = 222,226,916.70 : x - Step 2: Convert to fraction form
398,427,564.21/549,830,772.29 = 222,226,916.70/x - Step 3: Cross multiply
398,427,564.21x = 549,830,772.29 × 222,226,916.70 - Step 4: Simplify right side
398,427,564.21x = 122,187,197,232,786,480 - Step 5: Solve for x
x = 122,187,197,232,786,480/398,427,564.21 - Step 6: Final answer
x = 306,673,554.26
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.